Guitarist and songwriter David Dondero is a transient. He's lived all over the country, from Alaska to Texas. When he's not touring, he finds work — most recently as a carpenter in California. But it never lasts. Music always finds its way back into his life.

At the Central Iowa Shelter and Services in Des Moines, Iowa, health insurance navigator Andrea Pearce stood in a crowded dining hall on a recent day, shouting instructions on how residents can sign up for Medicaid.

"If you do not have insurance and you want to enroll and you have an e-mail address where you know the password," she said, "come to the computer lab we will guide you through the application."

Iowa City librarian Jason Paulios pulls out his smartphone, enters his library-card number and begins downloading an album by local metal band Blizzard at Sea.

"So it's extracting now," he says, eyes on the screen. "It's at about 90 percent."

The download takes about five minutes to complete. Paulios says it's a great way to check out local music: You could be waiting for a concert to start, download an album by the band you're about to see and then listen to it on the way home.

William Tyler takes the stage at the Trumpet Blossom Café, a vegan restaurant and bar in Iowa City. Surrounded by effects pedals for his guitar, he wears jeans and black cowboy boots, and his fingernails are about an inch long.